Carbureter.



A. J. WEISS.

CARBURETER.

APPLICATION FILED 12.11.25, 1912.

1,038,040. Patented Sept. 10, 1912.

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OARBURETERf APPLICATION FILED JAN. 25, 1912.

1,038,040, Patented Sept. 10,1912.

3 SHBETSSHBBT 2.

A. J. WEISS. GARBURETER. APPLICATION FILED JAN-25, 1912.

. Patented Sept. 1( 1912.

K 3 SHEETS-SHEET 3 l on qXH/lmmeo 7? JW Y EMXAZUTM with hydro-carbonengines, such as are UNI ED STATES PATENT OFFICE.

ARTH UB J. WEISS, OI WEST ORANGE, NEW JERSEY, ASSIGNOR, BY MESNE,ASBIGN- MEN'IS, TO MAXI COMIANY, A CORPORATION OF NEW YQBK.

GARBURETER.

Specification of Letters ratent.

Implication filed January 25, 1912. serial No. 878,377.

To all whom it may concern:

Be it known that I, ARTHUR J. Wmss, a' citizen of the United States,residing at West Orange, county of Essex, State of New Jersey, haveinvented certain new and useful Improvements in Carburetors, of whichthe followingis a full and complete disclosure. 1

The object of my invention is to provide an improved carburetor for usein connection used on motor vehicles, which shall be more ositive andefficient in operation, particuliirly when the engine is bein started oris chan in its spec in accor ance with the spec '0 the vehicle or otherdevice being driven by the en ine. I

The special ObJGCt of my invention is to provide a carburetor that willobviate the necessity of priming the engine preparatory to starting andat the same time, Wlll not cause a flooding of the carburetor or a wasteor overflow of gasolene or similar fuel.

It is also a further object of my invention to permit a rapid anduninterrupted supply of the fuel when the engine is running at itsmaximum speed, which supply is at all times under complete control inconnection with the throttle valve so that theright mixture of fuel andair may be obtained, while at the same time the proportions of themixture of fuel and air may be varied to suit diii'crent conditions.

For adetailed description of one form of my invention, which I at thepresent time, consider preferable, reference may be had to the followingspecification an to the accompanyin drawings, forming a part thereof ofw ich- Fi ure 1 is a side elevation, showing the need e valve and" camchamber casing in vertical. sect-ion substantially "on the line II Fig.'2. Fig. 2 is a plan view showing aportion of the casing andneedlcfvalve in cross-section substantially-on the line II- II Fig; 1.Fig. 3 is a vertical sectional view taken substantially on the line IIIFi 2. Fi 4 is a vertical sectional view t rough t e mixing chamber takensubstantially on the .line IV-IV ,Fig. 1. Figs. 5 and 6 are of thenature div grammatic views through the mixing chamclosed, may beregulated ber of the carburetor, similar to Fig. 3-but.

showing the relations of the air and fuel under iii'erent conditions ofoperation.

Referring to the drawings: the numeral (1) indicates the casing o thecarburetor proper or the mixing chamber and the numeral (2) indicatesthe casing of the float valve for maintaining an even supply of fuel.

The numeral (3) indicates the pipe wh1ch is connected with the main fuelstorage. tank and its out-let is preferably supiplied'with a screen (4)for straining the sal fuel. The fuel passage (5) o ens into the floatvalve chamber (6) .an is controlled by the valve (7) operated by thefloat The versely through into t continued upward in a verticaldirection as indicated at (12). At the angle between the passa es valve(13 a apted to regulate the amount of fuel desired during the initialaction of the carbureter. The passa e (12) terminates within the mixingcham er 11) in the form of a nozzle (14),.which nozzle is provided at aoint slightly removed from its extreme on with diverging openings (15),the pur ose of which will be hereafter more particu arly pointed out. a

The numeral (16) indicates the throttle valve substantially in thewell-known.butterfly form and at one side provided with a slot or recess(17), through -which the nozzle (1t) is adapted to extend as indicatedin Fig. 3 and which may be more or less closed. by an adjustablescrew-threaded in (18) passing through the casing (1).

his screw-threaded pin (18) is adapted to be held in different angularpositions by means of a sprin -pressed pawl (19). It .will be seen thatt is pin (18) ma be more 0 partition or web" (10) or less withdrawn ormserted in t e mixing chamber ('11) thereby more or less filling therecess (1.7) so; that the passage of air past the throttle valve.

; it will be seen that Referring to Fi -1 $6) communicates with a thefloat chamber passage 20') which is connected with the .needle va vs(21) passing through a hush-.

passage 9 extends trans- I t ((9) and (12) is placeda needle when thesame is e mixing chamber (11) and then is knurled head (26).

ing (22). The stem of the needle valve (21) extends upward through atube or bushing (23) and is screw-threaded therein as indicated at (24).Above the screw-thread portion (24) is a cylindrical portion providedwith longitudinal grooves (25) and a The grooves (25) co operate withthe spring-pressed pawl (27) to hold the val ve spindle (21) indiiferent angular positions. The bushing (23) carries a fixed collar 28)and is surrounded by a helical spring (29), one end of which restsagainst the said collar. The upper end ofsaid spring (29) .rests againsta. por tion of the casing (30) which surrounds the operating parts ofthe needle valve. The central pivoted rocking lever (31), provided atone end with a fork (32) which contacts with the collar (28) on thebushing (23), serves to adjust the position of the needle valve. Thcopposite end of this rocking lever (31) contacts with a cam (33) fixedto the shaft (34) of the butterfly? valve (16). The shaft (34) extendsthrough the casing (1) and at its upper end is provided with anoperating lever (35). It will now be seen that as the throttle valve(16) is more or less opened by the lever (35) the cam (33) will operatethe rocking lever (31) to-open the needle valve (21) to.a correspondingextent, this action being independent of the supply of the fuel to thenozzle (14) except as the latter is affected by the suction of theengine. The web or partition (10) in the mixing chamber (11') isprovided with a second horizontal passage (36) which communicatesthrough the passage (37 with the opening upon the needle valve (21). Thepassage (36) has a series of small conduits (38) branching therefrom,which extend vertically and open into the mixing chamber on the upperside of the web or partition (10) as fully shown in Figs. 3 and 4. Thepassage (36) also communicates with a passage (39) extending verticallyfrom the passage (36) and this passage (39) communicates with twosimilar passages or conduits (40) and (41) which also enter the mixingchamber at its side, slightly below the level of the throttle valve (16)when it is in its closed position. duits (38), (40) and (41) will now bedescribed in connection with the operation of the carbureter.

Referring first to Fig. 3; it will be seen that the position of theparts is such as they would assume when the engine is first beingcranked or started. At this time a suction or partial vacuum is createdin'tho manifold and the mixing chamber (11) by the movement of thepistons of the engine This causes the fuel in the passage (12) to beejected through the nozzle (14) and since the holes (15),,at the lowerpart, of said The object of these small con-Q qllllently the maximumnozzle, enter the mixing chamber below the closed throttle valve (16)where there is no appreciable vacuum, air will also be sucked throughsaid holes (15) and be ejected together with the gasolene into themixing chamber 11) above the throttle valve, thus a very rich mixture ofair and gasolene is immediately supplied to give the initial or startingmixture to the engine. In this Fig. 3 the arrows are intended toindicate the air, while thedots and dashes indicate the fuel and thisdesignation is also employed in Figs. 5 and 6. It should be noted thatat this time the outlets of all the conduits (38), (40), and (41) arebelow the throttle valve and subject to no suction, no fuel thereforebeing drawn therethrough. Assuming that it is now desired to increasethe supply of the mixture for starting the autombbile; the throttlevalve (16) is of course turned accondingly until at one point in itsmovement,-it reaches the position shown in Fig. 5. In this position thenozzle (14) acts as before in connection with the passages (15) anddischarges above the throttle valve (16) where it is as before, subjectto a partial vacuum in the mixing chamber (11). This also draws the fuelthrough said passage (40) and since the conduits (38) still open belowthe throttle valve, air. will also be drawn into the passages (39) and(40) forming a rich mixture therein, which will immediately bedischarged into the mixing chamber (11), thus nozzle (14). As the motionof the throttle valve is continued, air is admitted to a greater andgreater extent, while at the same time the right band edge of thethrottle valve (16) passes successively the outlets of the conduits (41)and (38) thus the suction in the mixing chamber is made effective uponan increasing cross-sec tional area of the fuel supply passages andatthe same time the ainsupplied through said passages 1s dimm- -ished inquantity, the increased supply ofair however, being obtained by agreater opening of the throttle valve. When the throttle valve is in theposition lndicated in Fig. 6, it will be seen that fuel is being.supphed through all of the passages and since the suction is alsooperative u on the small radial passages (15), fuel is a so suppliedthrough these. This indicates the point of maximum fuel supply andconsespeed and power of e engine. However, the fuel is at the same timeregulated for intermediate degrees of speed by means of the cam (33)controlling the needle valve (21).

From the above it will be seen that I have provided a carbureter whichcontains two mechanically independent fuel supply systems; one whichoperates when the engine masons ,is being started and when runningslowly,

while the other operates in addition there to while the throttle valveis being opened and controls the supply in two ways up to the maximumspeed; these two ways being the bringing into action of successiveelements of the fuel outlets and the control of the needle valve.

Having thus described this form. of my invention, what I claim anddesire to protect by Letters Patent is: Y

1. A carburetor having a mixing chamber, a throttle valve, and aplurality of fuel outlet passages entering said chamber and 'arranged tosupply a mixture of fuel and air and thenliquid fuel progressively assaid throttle valve is opened.

2. A. carburetor having a mixing chamber, a throttle valve, and a fuelpassage having a plurality of branching outlets enterin said chamber atseparate points below sai throttle valve, said outlets beingsuccessively caused by the throttle valve as it is. opened, first totake air and finally to eject liquid fuel,

3. A carburetor having a mixing chamber, a throttle valve, and a fuelpassage having a plurality of branching outlets entering said chamber atseparate oints below sai throttle valve said outlets eingsuccessivelcaused by said throttle valve as it is opene to take air, eject mixedair and fuel an finally eject liquid fuel. v

4t. A carburetor having a mixing chamber and a fuel passagehavingaplurality o branching outlets entering said chamber,

said outlets being arranged to act initially as air inlet openings andthereafter as liquid fuel outlet openings, and means for controlling theintake of air and the exit of liquid fuel through said outlets.

5. A carbureter having a mixing chamber, and a fuel supply passage havmga plurality of branching outlets entering said chamber, said outletsbeing arranged to act initially as air inlet openings and thereafter asliquid fuel outlet 0 enings, and a valve for controlling the inta e ofair and the exit of liquid fuel through said outlets,

6. A carburetor having a mixing chamber, and a fuel supply passagecomprising a plurality of branching outlets, and a throttle valvelocated adjacent said outlets, the angular osition of which throttlevalve controls t e initial flow of air and subsequently liquid fuelthrough said outlets; r

'l. A carburetor having a mixing chamber,

and a fuel passage comprising a plurality of branching outlets, and athrottle valve located adjacent said .outlets, the action of whichthrottle valve causes air to enter initiall some of said outlets and tomix with t e fuel issuing from others of said outlets and finally asupply of liquid fuel in different positions of said valve.

8. A carburetor having a mixing chamber and a fuel supply passage havinga plurality of outlets, a throttle valve, a plurality of said outletsbeing located adjacent the.

path of movement of said valve so as to suppl air'and fuel on the outletside and to su tract. air from the inlet side as the valve is operated.

9. A carbureter having a mixing chamber and two sets'of fuel passagesentering the same, and-a throttle valve, one of said sets of passageshaving its outlets located so as to operate above said throttle valvewhen the same is in closed position, and the other set being located soas to be rendered progressively operative to supply air and fuel as thethrottle valve is opened.

.10. A carbureter having a mixing chamber and two sets of fuel passagesenterin the same, and a throttle valve, one of sai sets of passageshaving its outlets located so as to operate above said throttle valvewhen the same'is in closed position, and the other set being located soas to be'rendered inoperative by the throttle valve to supply fuel whenin closed position but effective to supply air and whose effectivecross-section to en ply fuel is progressivelyincreased as the t rottlevalve is opened;

11. A carburetor having a mixing chamber and two sets of fuel supplypassages enterin the same, and a throttle valve, one of said sets ofpassages having its outlets located soas to operate above said throttlevalve when the same is in closed position and the other set having itsoutlets located so as to be made progressively operative by the throttlevalve to successivel supply air and fuel as said valve is opened 12.Acarbureter having a mixing chamber and two sets of fuel passagesenterin the same,,anda throttle valve, one of sai sets of passages beinso located as to be operative above said t rottle valve when the same isin closed ositionfboth of said sets having outlets coated so as to bemade progressively operative by the throttle valve to supply ELIE" andfuel as said valve is opened.

.13. A carburetor comprising a throttle valve having an opening therein,a liquid fuel supply, two passages leading therefrom, one of whichterminate in a nozzle which passes through said opening to the enginenozzle which asses throu h said opening to" the engine si e of said vave when the same is in its closed position, and means for moving saiddisk to-a position above said nozzle.

15. A carburetor having a mixing chamllllll her, a central transverseWeb therein, having two horizontal fuel passages therethrough, an outletpassage communicating with one of said horizontal passages, a nozzleconnected with said outlet passage, the other horizontal passagecommunicating with a plurality of outlet passages branching therefrom.

16. A carburetor having a mixing chamher, a central transverse webtherein having two horizontal passages therethrough, an outlet passagecommunicating with one of said horizontal passages, a nozzle connectedwith said outlet passage, and a throttle valve beyond which said nozzleextends when the valve is closed the other horizontal passagecommunicating with a plurality of outlet passages branching therefromand Whose ends are located adjacent the path of movement of said valve.

17. A carbureter having a mixin chamher, a disk throttle valve pivotetransversely therein, a central transverse Web in said chamber andhaving a plurality of branching passages therethrough, the outlets ofsaid passages bein located below said valve when it is close and madesuccessively operative by the edge of said valve as it is opened.

Signed this23rd day of January, 1912.

ARTHUR J. WEISS.

